Multiple spindle lathe



Oct. 21, 1952 c. E. MILLER MULTIPLE SPINDLE LATHE l8 Sheets-Sheet 1Filed Oct. 17, 1946 jw a lwvzzi @ct. 21, 1952 c. E. MILLER MULTIPLESPINDLE LATHE l8 Sheets-Sheet 2 Filed Oct. 17, 1946 21, 19.52 c. E.MILLER MULTIPLE, SPINDLE LATHE,

18 Sheets-Sheet 3 Filed Oct 17, 1946 Oct. 21, 1952 c, M ER MULTIPLESPINDLE LATHE 18 Sheets-Sheet 5 Filed Oct. 17, 1946 Nov l8 Sheets-Sheet6 w 2. Q E 05.

C. E. MILLER MULTIPLE SPINDLE LATHE Oct. 21, 1952 Filed Oct. 17, 1946Oct. 21, 1952 c. E. MILLER 2,614,446

MULTIPLE SPINDLE LATHE Filed Oct. 17, 1946 --18 Sheets-Sheet 7 Oct. 21-,1952 c. E. MILLER MULTIPLE SPINDLE LATHE Filed Oct. 17, I 1946 18Sheets-Sheet 8 Oct.2l, 1952 c. E. MILLER MULTIPLE SPINDLE LATHE FiledOct. 17, 1946 18 Sheets-Sheet- 9 Oct. 21, 1952 c, MILLER MULTIPLESPINDLE LATHE 18 Sheets-Sheet 10 Filed Oct. 17, 1946 Own mom Oct. 21,1952 c. E. MILLER 2,614,445

' MULTIPLE SPINDLE LATHE Filed Oct. 17, 1946 1a Sheets-Sheet 11 Oct. 21,1952 C. E. MILLER MULTIPLE SPINDLE LATHE l8 Sheets-Sheet 12 Filed Oct.17, 1946 qTliid fizz $2352 @JWZZZ I W W 18 Sheets-Sheet l3 C. E. MILLERMULTIPLE SPINDLE LATHE Oct. 21, 1952 Filed Oct. 17, 1946 M15 30 man 3bum Omm 5m {3m mam can an 30. m PNn 0mm 50 3m 3w mam 18 Sheets-Sheet 14C. E. MILLER MULTIPLE SPINDLE LATHE Oct. 21, 1952 Filed Oct. 17, 1946 O21, 1952 c. E. MILLER MULTIPLE SPINDLE LATHE 18 Sheets-Sheet 15 Filed001;. 17, 1946 MW "WWW 1,952 c. E. MILLER 2,614,446

MULTIPLE SPINDLE LATHE l8 Sheets-Sheet 16 Filed Oct. 17, 1946 LIZ 1952c. E. MILLER MULTIPLE SPINDLE LATHE 18 Sheets-Sheet 1'7 iv N 80 mu mancan an 80 90 m5 m5 mum En Filed Oct. 17, 1946 Oct. 21, 1952 c. E. MILLERMULTIPLE SPINDLE LATHE 18 Sheets-Sheet 18 Ila/611152" i J' Filed Oct.17, 1946 Patented Oct. 21, 1952 1 MULTIPLE SPINDLE LA'I HE Carroll E.Miller, Windsor, Vt., assignor t6 Cone Automatic Machine Company Inc.,Windsor, Vt., a corporation of Vermont Application October 17, 1946,Serial No. 703,772

2 Claims.

This invention relates to -multiple spindle lathes and more particularlyH to I such lathes wherein the spindles are arranged in a vertical planeto form what is commonly known in the artas a vertical machine. IOnebbject of the invention; is to provide independent front andback toolslides for, the several spindles so that the tooling can beindependentlycontrolled for the various spindles.

A further object is to provide forcommon actuationof the several toolslides from an overhead actuating member. I 1

Another object is to provide improved end working tool mechanism anddriving means Figure 4a is a..view similar to a portion'of Figure 4, butshowing the end tool drive mechanis'mfor vthreading'tools.

Figure 5-isfa fragmentary rear elevation of the machineto 'a' largerscale than Figure 1 and showing certain of the control mechanism. 7Figure 6 is a detail sectional view on line 6-6 of Figure 5 showing aspeed selector. Figure 7 is a detail sectional viewon line 1 of Figure6. 2 Figure 8 is a detail sectional view on line 8-8 of Figure 4. 1 '1Figures'9 and are detail sectional views on lines 9-9 and 10-10,respectively, of Figure 8. Figure 11 is a detail sectional view on iline ll-ell of 'Figure'4. l

Figure 12- is a fragmentaryxelevational view showing certain of thesolenoid control mechanism,

Figure 13 is a view at right angles to Figure 12 of the same mechanism.

. Figure 14 is'a sectional view Figures 1, 2, 5, 16, 17and118.

Figure '15 is a detail sectional view on 15-15 of Figure 14. Y y

V Figure 16 is'a sectional'view on line Iii-i6 of Figures 3,14, 1'7and.19.

on line line 'Figure 17 is 'aYdetail sectional view on line I1-l1 ofFigures 16 and 19.

. Figure leis a sectional view on line |8l8 Figures 3 and 14. j

Figure 19 is a sectional view on line l9-l9 of Figures 1, I6, 17 and 18.

Figure 20 is a detail sectional view on line 20-40 of Figures 3, 14 and19.

Figure 21 is a sectional view on line 2|-2l of Figures 1 and 17. a

Figure 22 isa fragmentary top plan view similar to a portion of Figure2; but with the cover removed. Figures 23 and 24 are detail sectionalviews on lines 2323 and 24-24, respectively, .of Figures 1 and 2.

Figure, 25 is a detail sectional view on line 25-25 of Figure 1. v

Figure 26 is a sectional view on line 2G2B of Figures 1 and 2.

. Figure 27, is a .view somewhat similar to a portion of Figure 26, butto alarger .scale, and in more detail.

Figure 28 is a detail horizontal sectional view on lines 28-28 of Figure27.

Figure 29 is a fragmentaryend elevation of a tool slide and its mountingand corresponds to the left, hand end of the parts shown in Figures 27and 28.

Figures 30 and 31 are vertical sectional views on lines-30-30 and 3l-3l,respectively, of Figures 'l and 8.

Figure 32 isa detail sectional view on line 32-32 of Figure 31.

Figure 33 is a detail longitudinal section through a work'spindle online 33--33 of Figure '18 and showing the work gripper closed.

Figure 34 is a view similarto a portion of Figure 33 but showing thegripper open. Figure 35 is an electrical diagramof the machine controls.Y I

The machine. comprises, as shown best in Fig:- ures l, 3, 4 and 26, abed I on which is carried a pan 2 which supports the operativemechanism. Extending upwardly from the pan :at one end is a column 3'which houses the work spindles and at the other end is 'a column 4which. houses 'various portions of the drive mechanism and connectionsfor the end work'- ing tools. The columns 3 and 4 are connected at theirupper ends by a longitudinal frame 5 within which is journaled anoverhead cam shaft 6 by which much of the cycle of operations of themachine is actuated and'controlled.*' i

The column -3- carries a plurality of work which carrying spindlesarranged in parallel relation to each other and in a single verticalplane, these spindles being shown best at in Figure 18. As shown fourspindles are employed, but more or less might be employed as desired.

- They are journaled in spaced sets of bearings H on each side of thisplane, those on one side being front tool slides and those on the otherside being rear tool slides, both being movable laterally of'the axialdirection-attirespindles and each being located beyondthe forwardend ofeach spindle in such positionthatone or more toolsv ll carriedtherebymay operate on work pieces DIOjGCtiDg fIQHl the spindles.

Spindle drive 1 The workspindles l0 are-rotated at either high or lowspeed, this being in accordance with usual practice. She driving poweris-taken from asuitable source suchas a motor Eilmounted on a platform2| at the top of-the machine over the. column l. (see Figures 1, 2, 3,and l). Thismotor 29 has its driving pulley 22 connected as by a belt orseries of V belt/s23 with apulley 24- carriedby ashaft 25 (Figures '1,i, 11, 16 and 19) which extends lengthwise of the machine. andlisconnectedsthrough a-Jccupling 26 (Figure 16) with an extension zl whichis journaled in'thehcolumnt. Within this column the extension Zlcarriesa clutch 28, which, when closed, drives a beveled gear- 2 meshingwith abeveled BiIIiOH-BDHOIJ. a crosscolumn shaft 3| which haskeyedthereto a worm-6| [D (Figure .14), which, inturn, meshes with" awormwheelBZ secured -tothe cam shaft 6.- The clutch '28 is controlled bpa shifter yokeGL-(Figures l4, l6 and 24) and when in clutchingengagement the shafttluis drivenat high idle speed. The shaft. 21 alsocarries journaled thereon a second beveled gear (Figure 16) may be.clutched. thereto as :by the clutch 36 having a shifter .31- (Figures-16and 23).; When theclutch 28is open-and the clutch 38 is closed,the-.shaft 3| isdriven in the reverse direction .to5that when the clutch28 is closed. and the clutch. 3B. is open. 1

When the highaspeed clutch 28 is open and the reverse clutch was alsoopen, the shaft 3| is normally driven at low working speed. The clutchshifter 34 for the high speed clutch 28 is connected through rocker armswand 4|, as

shown best inFigure 24, to a pair of aline'd rock shafts 42 and I13which extend out-on opposite sides of the machine. On the rear face ofthe machine, the shaft 53 carries an actuating lever 45,1while on thefront face of the machine the shaft 42 is provided with an actuatinghandle 46. Intermediate between the ends of the shaft 41; it hasattached thereto an arm 41' provided with a retractible cam follower 48,which, when projected may-be contacted by acam 49- on a cam drum 50carried by the cam shaft 6. When the cam follower 48 is projected intoengagethe high speed clutch into or out of operation,

while power driven, thus changing the speed of operation of the machine.When the follower 48 is retracted and locked out of engagement with thecam 49 by a cross pin 5| movable outwardly through a slot 52 and thenturned out of registry with the slot, the operator may shift the highspeed clutch into or out of operation by hand through the handle 46 forset up pur-- poses. The reverse clutch 36, however, has its shiftingyoke 31 actuated by a single arm 55 carried by a rock shaft 56. This isprovided with an actuatingv handle 51 on the front face of the machineonly. As shown in Figures 2 and 23, the rock shaft 56 has an arm 58clamped there- .to, which, when the handle 51 is moved to throw in thereverse clutch, moves the actuating lever 58! of a normally open switchLSI to closed position, which, as will later appear, throws out thepower feed clutch collar I ID.

The slow orworking speed is derived from the shaft 21 (see Figure 16)which at its extreme end is connectedthrough a pair of" change gears 60-and G l to a shaft 62. This shaft 62 hasa pair of gears 63 and fidthereon, the gear'63 being larger than the gear 65. The gear 64 isslidablykeyed to the shaft 62, while the gear 63 is journaled thereon.The gear 64 may mesh with-a gear 65, and the gear 63 meshes with-a gear66, both keyed to-a shaft 61. The gear 64 is of suificiently smallerdiameter than the gear to be brought into or outof mesh-with an internalgear portion 68 on the gear 63, in which mesh position it is out of meshwith the gear and is locked to rotate with the gear 63. When it is inmesh with the gear 65, the drive of the shaft 61 is through the shaft62, the gear 64 and the gear65, but when the gear 64 isin its .dottedline position of Figure 16, meshing with the internal gear 68, the driveis from the shaft 62 through the gear 64, the internal .gearia the gear63 and the gear 66, the latter drive being at :a higher speed than theformer, since the drive isfrom the gear 63 to the small gear 66,thegears 63 and '68.rotating as a unit. The axial'positioncof the gear64 is controlled by a shifter arm 10 .'(see Figures 5 and 6), carried bya rock shaft Tl which pro jects through-the rearward :casing of the.machine'and is provided "with an actuating handle 12 accessible to theoperator.- A ball detentilS enters either of, a pairof depressions inone. e'xtension 14 of the shifter arm 10 (seeFigures F5 and 7) toreleasably retainthe parts in. either selected position.- Thespeedof theshaft 6! is then dependent upon the selection of..-thetwo change gears60 and 6| and the position of the handle 12.

The shaft 61 carries .a pair of axially spaced sprocket wheels 15 and76. About thersprocket wheel passes a; chain, belt18 whichpasses arounda sprocket wheellfl on the upper'spindle H'Lthis sprocketchainalsopassing about the sprocket wheel 8|] on the nextto'th'e: bottomspindlelfland back. to thesprocket wheel 15. About thesprocket'wh'eel16. a similar chain-8| passes, this engaging around a sprocket wheel82on the next to the top spindle l0, and around a sprocket wheel 83 onthe-bottom spindle In It will be noted from Figurelathat these spindlesprocket wheels are offset axially of the spindles, those on eachalternatespindle being arranged in the same plane, but thoseof adjacentspindles being arranged offset fromeach otherr- The chains 18 and 8| maypass Labout suitable idlers

